Alarm Wireless MODBUS MQTT Modem Provide 1RS485 4DO 4DI 4AI
Interface
Parameters of MQTT Modem
| |
Number of ports | RS485*1 | Number of interfaces | 1 Relay output |
Standard | RS485: A, B | Standard | NO*1, COM*1 |
Baud rate | 600～921600bps | Mechanical durability | 10^7 |
Data bit | 8, 9 | Electrical durability | 10^5 |
Stop bit | 0.5, 1, 1.5, 2 | Capacity | 5A 250VAC 30VDC |
Check Bit | NONE EVEN ODD | |
| Number of interfaces | 2 Relay input |
Voltage | 9~36V | Standard | DI*2, COM*1 |
Current | 60mA(aver) @9V
30mA(aver) @36V | Detection range (wet node) | 5~50V->High0~2V->Low |
| |
ESD | IEC61000-4-2, Level 4 | Number of Interfaces | 1 Analog input |
Surge | IEC61000-4-2, Level 3 | Standard | AI*1, G*1 |
Group pulse | IEC61000-4-2, Level 3 | Scope of test | 4~20mA |
- Introduction of MQTT Modem
ZHC492C support 4-channel dry (wet) node detection, 4-channel relay
(COM, NO, NC) Output, 4 channel analog quantity (current 4~20mA)
detection, 1 channel RS485 transparent network IO products,
compatible with Modbus RTU/TCP protocol. With remote control as the
core function, it is highly easy to use, users can easily and
quickly integrate into their own systems to realize remote and
local control based on LTE, RS485.
Client can send Modbus commands to ZHC492C through the network and
serial port to read and write DO status.
DO of ZHC492C support active reporting, restarting the holding
relay status, output holding time, timing flip.
ZHC492C Function Description
Support serial port timing to send heartbeat
Send Modbus commands to ZHC492C through the network and serial
port, you can read and write DO DI status, AI value
ZHC492C DI DO supports active reporting, restart to maintain relay
status, output retention time, timing flip, etc.
(If there is no DI status change after power-on, it will be
reported cyclically according to the "cycle time". If there is a DI
status change, all status will be reported immediately and the
cycle time will be reset.)
Application of MQTT Modem
1. Automatic Soil Moisture Monitoring
Establish a soil information system to master the overall quantity,
quality and spatial distribution of soil resources.
2. Automatic Weather Monitoring
Improve the accuracy of weather forecasts to provide a scientific
basis for governments at all levels to prevent and reduce
disasters.
About Our Company
Chengdu Zongheng Intelligent Control Technology Co., Ltd. was
established in 2015. It is a high-tech enterprise focusing on the
research and development, production and sales of IoT communication
control terminal products and related overall solutions. The
company proposes an edge computing-based Criss-Cross IoT smart
terminal platform solution for the growing Internet of Things
connection, using the IoT smart communication terminal IOTRouter as
the entry point, combining edge computing and big data cloud
platforms to achieve IoT applications Data collection and
transmission, intelligent control and other functions.
| ZHC492C |
RS485 Modbus | √ |
RS485 Automatic Acquisition | √ |
Virtual Serial Port | √ |
Connfiguration Software | √ |
Threshold Report | √ |
4 Channel Socket | √ |
8 Alarm Clocks | √ |
Customize the Follow Logic of Ports | √ |
JSON/Modbus RTU/TCP | √ |
